Shear pin



FIG. 1 is an isometric view of the shear pin;

FIG. 2 is a side view of the shear pin, views at any number of degrees of rotation therefrom about an axial centerline of the pin being identical;

FIG. 3 is an end view of the shear pin; and,

FIG. 4 is another end view opposite the view of FIG. 3 of the shear pin.

The shear pin can be inserted into a critical point in a machine to resist shearing until stressed to excess. The article is shown with a symbolic break in its length. The appearance of any portion of the article between the break lines forms no part of the claimed design. 

CLAIM The ornamental design for a shear pin, as shown and described. 